From ea6abfadb7ef8ed66be20b578d817fe5b56323ba Mon Sep 17 00:00:00 2001 From: Matt Guthaus Date: Wed, 28 Nov 2018 09:48:16 -0800 Subject: [PATCH] Stagger outputs of dff_buf --- compiler/modules/dff_buf.py | 19 ++++++++++++------- 1 file changed, 12 insertions(+), 7 deletions(-) diff --git a/compiler/modules/dff_buf.py b/compiler/modules/dff_buf.py index 48d0dc32..d17e53fa 100644 --- a/compiler/modules/dff_buf.py +++ b/compiler/modules/dff_buf.py @@ -102,8 +102,7 @@ class dff_buf(design.design): mid_x_offset = 0.5*(a1_pin.cx() + q_pin.cx()) mid1 = vector(mid_x_offset, q_pin.cy()) mid2 = vector(mid_x_offset, a1_pin.cy()) - self.add_path("metal3", - [q_pin.center(), mid1, mid2, a1_pin.center()]) + self.add_path("metal3", [q_pin.center(), mid1, mid2, a1_pin.center()]) self.add_via_center(layers=("metal2","via2","metal3"), offset=q_pin.center()) self.add_via_center(layers=("metal2","via2","metal3"), @@ -114,8 +113,10 @@ class dff_buf(design.design): # Route inv1 z to inv2 a z1_pin = self.inv1_inst.get_pin("Z") a2_pin = self.inv2_inst.get_pin("A") - mid_point = vector(z1_pin.cx(), a2_pin.cy()) - self.add_path("metal1", [z1_pin.center(), mid_point, a2_pin.center()]) + mid_x_offset = 0.5*(z1_pin.cx() + a2_pin.cx()) + mid1 = vector(mid_x_offset, z1_pin.cy()) + mid2 = vector(mid_x_offset, a2_pin.cy()) + self.add_path("metal1", [z1_pin.center(), mid1, mid2, a2_pin.center()]) def add_layout_pins(self): @@ -150,16 +151,20 @@ class dff_buf(design.design): height=din_pin.height()) dout_pin = self.inv2_inst.get_pin("Z") + dout_pos = dout_pin.center() - vector(0,2*self.m2_pitch) self.add_layout_pin_rect_center(text="Q", layer="metal2", - offset=dout_pin.center()) + offset=dout_pos) + self.add_path("metal1", [dout_pin.center(), dout_pos]) self.add_via_center(layers=("metal1","via1","metal2"), offset=dout_pin.center()) - dout_pin = self.inv2_inst.get_pin("A") + dout_pin = self.inv1_inst.get_pin("Z") + dout_pos = dout_pin.center() + vector(0,2*self.m2_pitch) self.add_layout_pin_rect_center(text="Qb", layer="metal2", - offset=dout_pin.center()) + offset=dout_pos) + self.add_path("metal1", [dout_pin.center(), dout_pos]) self.add_via_center(layers=("metal1","via1","metal2"), offset=dout_pin.center())